FishDonkey - Close the mouth. The measuring board even has a reminder. LOL Close the mouth and bump the fish up against a 90 degree vertical surface to establishes a zero point

FishDonkey Tournaments

Cabela's® Canada Fish Measuring Board

FishDonkey Fishing Tournaments

Move Over Bass! Catching this fish on tournament day is a tradition since 1974

How to Measure Your Fish on Bump Boards Correctly for Online Tournaments

Why FishDonkey requires a release video in our own tournaments.

FishDonkey Fishing Tournaments

SOLUTION: Fish mouth - Studypool

Fish Donkey Tournament 2020